Don't trim trailing whitespace

Co-authored-by: Dave Long 24510-longwave@users.noreply.drupalcode.org

Closes #3456244

core/lib/Drupal/Core/PathProcessor/PathProcessorDecode.php

@@ -16,6 +16,10 @@
  * @todo Revisit whether or not this logic is appropriate for here or if
  *   controllers should be required to implement this logic themselves. If we
  *   decide to keep this code, remove this TODO.
+ *
+ * @deprecated in drupal:11.1.0 and is removed from drupal:12.0.0. There is no
+ *   replacement.
+ * @see https://www.drupal.org/node/3461941
  */
 class PathProcessorDecode implements InboundPathProcessorInterface {
 
@@ -23,6 +27,7 @@ class PathProcessorDecode implements InboundPathProcessorInterface {
    * {@inheritdoc}
    */
   public function processInbound($path, Request $request) {
+    trigger_error('PathProcessorDecode is deprecated in drupal:11.1.0 and is removed from drupal:12.0.0. There is no replacement. See https://www.drupal.org/node/3461941', E_USER_DEPRECATED);
     return urldecode($path);
   }